Rowe剪胀方程及一种新的推导方法  

Rowe’s dilatancy equation and new derivation method

作　　者：介玉新[1,2,3] JIE Yuxin(State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;Key Laboratory of Hydrosphere Sciences of the Ministry of Water Resources,Tsinghua University,Beijing 100084,China;Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学水圈科学与水利工程全国重点实验室,北京100084 [2]清华大学水利部水圈科学重点实验室,北京100084 [3]清华大学水利水电工程系,北京100084

出　　处：《水力发电学报》2024年第1期109-123,共15页Journal of Hydroelectric Engineering

基　　金：清华大学水圈科学与水利工程全国重点实验室(sklhse-2023-D-01);国家自然科学基金项目(52090081;52108372)。

摘　　要：剪胀性是岩土材料的重要特性之一。Rowe剪胀方程是一种经典的剪胀方程,它形式简单,所需假定较少,能够反映粗粒土、岩石乃至混凝土的剪胀性。在国内外受到广泛关注,且有很多的改进和发展。但在通常的Rowe剪胀方程的推导中,有一些概念尚需要商榷,所引入的锯齿面也容易引起误导。本文对Rowe剪胀方程及其发展改进进行梳理,提出了参考面的概念,并给出了一种新的推导方法。新的推导方法比传统方法在概念上更为严密,对两种推导方法的探讨也有助于加深对Rowe剪胀方程的理解。Shear dilation is one of the important characteristics of geomaterials.Rowe’s dilatancy equation is of a classic type,which reflects the dilatancy of coarse-grained soil,rock,and even concrete,featuring a simple form and fewer assumptions.It is widely acknowledged in the world and has been improved and developed by many researchers.However,some concepts in the previous derivation of this equation need to be discussed,and its separation planes of a tooth shape may mislead the readers.In this paper,the equation and its improvements and developments are reviewed,and a new derivation method using the concept of a reference plane is presented.It is thought that the new derivation is more rigorous in concept,and the investigation of these two methods sheds some light on our understanding of Rowe’s dilatancy equation.

关 键 词：剪胀方程 粗粒土 本构模型 摩擦角 剪胀角 参考面 

分 类 号：TU43[建筑科学—岩土工程]